Electromagnetic apparatus for reciprocating machine-tools and the like.



H. A. HORN OR.

ELECTROMAGNETIC APPARATUS FOR REOIPROGATING MACHINE TOOLS AND THE LIKE.

APPLIOATION IILED AUG. 17, 1907.

91 5,438. Patented Mar. 16, 1909.

w; in no H. A. HORNOR.

I ELECTROMAGNETIC APPARATUS FOR REGIPROOATING MACHINE TOOLS AND THELIKE.

APPLICATION FILED AUG.17, 1907.

915,438, Patented Mar. 16, 1909.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

HARRY A. HORNOB, OF RIVERTOll, NEW JERSFY.

ELECTED MAGNETIC APPARATUS FOR BECIPROCATING MACHINE -TOOLS AND THELIKE.

Specification of Letters Patent.

Patented March 16, 1909.

Application filed August 17,1907. 'SsriaI No. 389,084.

To all whom. it 1mg COM6I7t.'

Be it known that I, HARRY A. HORNOR, a citizen of the United States,residin" at Riverton, Burlington county, State of Few J e1' sey, haveinvented a new and useful Electromagnetic Apparatus for ReciprocatingMachine-Tools and the Like, of which ,the following is a s ecification.

My invent1on consists of a novel construction of an electro magneticapparatus for reci rocating machine tools, which is especially a aptedfor doin heav work, althou h of course it is equa ly We designed forlight work and consists broadly of a novel construction of an apparatuswherein I em loy an armature in conjunction with a wor ing and anauxiliar electro magnet, the enerizing of the coi s of said electromagnet being effected by means of a suitable manually or automaticallyoperated switching device.

My invention also consists in the employment of an.electrically1pjclillarized armature in the working tool is supported and operated.

My invention further consists in conjunction with an armature and theworking and auxiliary electro magnets, of a novel construction ofautomatic switching apparatus. whereby the working and auxillary-electromagnets are intermittently energized without requiring any attentionfrom the operator after said switching device is once thrown intooperation.

For the purpose of illustrating my invention, 1* have shown in theaccompanying drawings one form thereof which is at resent preferred byme, since the same has een found in practice to give satisfactory andreliable results, although it is to be understood that the variousinstru'mentalities .of which my invention consists can be'variouslyarranged and organized and that my invention is not limited to theprecise arrangement and organization of these instrumentalities asherein shown and described.

Figure 1 represents a side elevation of an electro magnetic 'a paratusfor reciprocating machine tools an' the like, embo ying my switch whichmay beemployed in conjunction with my invention. .F 1g. 4 representsanother embodiment of my inventlon where- 1n an electrically excitedarmature 1s emloyed. Fig. 5 represents a lan view of a portion of theoperating mec anis'm seen in ig. .4, showing the means for varying theair gap. Fig. 6 represents a cross-section of the electro magneticdriving parts of Fig. 4. Similar numerals of reference indicatecorreslponding parts in the figures.

eferrmg to the drawings :1 designates an electro magnetic apparatus forpunching,

shearing, presslng, hammering, for mg, jog-j gling, stamping, riveting,and the ike, having a bed or base 2 and an up er or overhanging frame orbody 3 which 1s connected to said bed, and preferably inte raltherewith, by the neck 4, said upper b0 y 3 having within the same, therecess 5 for the reception of an armature 6. In order to prevent manetic short circuiting through the masses of the machine frame, Ipreferably insert on the face of the magnet coils brass plates 6 It willbe understood that the contour of the entire body portion 3 may conformto that heretofore employed in punchin and riveting machines 0erated'mechanica y or pneumatically and therefore do not desire to belimited to any particular shape of the same.

7 designates a rod or stem secured to and depending from the armature 6,said rod i being guided in the o ening 8 in the wall 9 of the upper body3, sald rod having attached to its lower portion, a'tool head 10 whichcarries a tool 11, which as I have shown in punching or similar tool,

Fig. 1 may be a The reciprocate type desired is operated by er orauxiliary coil, it being understood that the function of the lower coil18 after the same has been energized is to cause-do scent of thearmature 6 and its adjuncts upon the work 20 which is supported upon asuitable anvil or die 21, while the function of the upperon auxiliarycoil 19 is to retract i or draw upwardly said armature 6 and itsadjuncts from the work and to retain the same inits elevated orretracted position until the work has been shifted to the de- In thediagrammatic view seen in Fig.3,

1 I have shown a manually 0 erated switch as 23 which I employ when(llrect control of each movement of the armature 6 is desired.

In Fig. 2 I have shown a mechanically or automatically operated switchwhich may be employed, suitable speed control of which may be obtainedby any type of motor used,

- as shown at 25 in said Fig. 2.

It will be apparent that when the manually operated switch as 23 isemployed as shown in Fig. 3, the armature 6 and its adjuncts may beretained in their upper or retracted position by energizin the upper orauxiliary electro magnet coi 19 or said armature may be drawn to itslowermost or operative position by energizing the lower or workingelectro 'magnet coil 18.

In the construction seen in Fig. 2 wherein I employ an automaticallyoperated switching device, it will be apparent that the motor 0 eratedswitch will operate as follows e motor 25 is provided with a shaft 26 onwhich is mounted the contact drum 27, the latter having suitable contactand insulating strips attached thereto. Two sets of brushes 28 and 29are provided bearing on the contact Idrum. One set will lead the currentfrom the supply-means 30 and the other set will energize the electromagnet coils alternately so as to impart proper reciprocating movementto the armature and its adjuncts. On the contact drum 27 as will beunderstood from Fig. 2, there is a continuous contact rin 31 and twodiscontinuous rings 32 an 33, one lead wire connecting with thecontinuous rin and the other lead wire being divided an connected by twobrushes, with both discontinuous rings. One end of the working electromagnet coil as 18 is connected'to the same brush as one end of theauxiliary electro magnet coil 19, the remaining end of each electromagnet coil being connected by a separate brush to one of thediscontinuous contact rings, the rotation of the drum then sending thecurrent alternately.

into the working and auxiliary electro magnet coils as will be ap arent.

For very heavy wor I preferably employ the embodiment of my inventionseen in Flg. 4,

wherein an additional coil 34 is employed, the same being embedded inthe armature 35 whereby the latter is electrically excited or polarizedand has suitable connections as 36 and 37 leading. to a-suitable sourceof in one position holding the working tool in it s upper or retractedosition and when said switch is in its opposite position, it will be aparent that the working electro magnet cm as 39 and the armature electromagnet coil 34 cooperate to force the tool powerfully into the work, thetool being retracted by the auxiliary electro magnet coil, as isevident. It will be further understood from Fig. 4 that the auxiliaryelectro magnet coil 40 is enerized at the proper period by means of theeads 41 and 42 while the working electro magnet coil 39 seen in Fig. 4is ener ized at the proper intervals by means of the leads 43 and 44,said leads 41 and 42 and 43 and 44 being controlled by the switchingmeans 38 or its e uivalents. It will further be apparent t at the coil34 is in circuit in both positions of the switching device 38 while theing upon whether the tool is to be force into.

the work or held in its upper or retracted position. The upper electromagnet coil 40 may be in a separable or movable portion, as 45, of theupper frame 3 and is adapted to be moved vertically by means of handwheels 46, each having a stem 47 carrying the pinions 48, which meshwith the racks 49 attached to the electro magnet coil 40 or its frame.

It will be understood that in the construction seen in Figs. 4 and 5, Ihave omitted to show the bearings for the stem 47, as it will beunderstood that the same ma be mounted in any suitable portion of t eframe or body 3, it being only essential that said stems 47 be supportedin such a manner that they may be readily rotated by hand wheels 46,

whereby the engagement of the pinions 48 with the racks 49 will raiseand lower the upper electro magnet coil 40 so as to vary the an gapaccordin to requirements.

It will be understood by-those skilled in this art that the workingforce is directly proportioned to the magnetic flux produced y electriccircuits fiowin in coils, the path of which is through the e ectromagnet coil, the armature and then back through the main frameto theelectro ma net coil a ain,

including the air gap, where om it w' beapparent that by moving theseparable portion of the frame containing the auxiliary frame,arodsecured directly thereto, a

working implement carried by said rod,

electro magnet coils embedded in said frame on opposite sides of saidrecess and adapted to operate said armature and implement.

2. In an electro magnetic apparatus for reciprocating machine tools andthe like, a frame, an armature located in a recess in said frame, a rodsecured directly thereto, electro magnet coils on opposite sides of saidrecess, and switching means for causing reciprocation of said armature.

3.?lIn an electro magnetic apparatus for reciprocating machine tools andthe like, a frame, an armature located in a recess in said frame, a rodsecured directly thereto, a working implement carried by said rod,electro magnet coils on opposite sides of said recess, and switchingmeans for alternately energizing said electro magnet coils.

4. In an electro magnetic apparatus for reciprocatin machine tools andthe like, a frame provi ed with a recess, electro magnet coils embeddedin said frame on opposite sides of said recess, an armature located insaid recess having a greater diameter than the electro magnet coils, arod secured to said armature, a working implement carried by said rod,and means to alternately energize said electro magnet coils.

5. In an electro magnetic a paratus for reciprocatin machine tools andthe like, a

frame provi ed with a recess, electro magnet" coils embedded in saidframe on opposite sides of said recess, an armature located in saidrecess having a greater diameter than the electro magnet coils, a rodsecured to said armature, a Working implement carried by said rod, andswitching means to alternately energize said electro magnet coils.

6. In an electro magnetic apparatus for reciprocating machine tools andthe like, electro magnet coils, an armature therebetween, a rod securedtosaid' armature/3a working implement carried by said ,rod,

switching means for reciprocating said i1n plement, and means forvarying the magnetic reciprocating-machineitoolsuan frame, an,armaturelocated -in a'recess in said frame,v a rod secureddirectlythereto, afworking implementca'rriedby said rod,

, 14. In "an electro"magneticpapparatus for frame, Ta Qpluralityoteleetro; magnetintermediately of said coils electro ma net coils on oposite'sidesof'said recess, an means for shifting one of saidelectroinagnet coils to vary the magnetic flux.

8. In a device of the character described, a frame, a body portionmovable relative thereto, an electro magnet coil embedded in the same;means for moving said electro magnet coil axiallyan armature adjacent tosaid electro magnet coil, and a coil embedded in said armature.

9. In a device of the character described, a bed, an upper overhangingbody portion connected to said bed having a recess therein, an armaturein said recess, a rod depending from said armature, and guidedin saidbod portion, a working tool carried by said ro a working electro magnetcoil embedded in said overhangingsbody below said armature, an auxiliaryelectro magnet coil embedded in said body above said armature, andswitching means for effecting the reciprocation of said armature.

10. In an. electro magnetic a paratus for reciprocating machine tools anthe like, a frame provided with a recess, axially alined electro magnetcoils embedded in said frame on opposite sides of said recess, anarmature located insaidrecesshavingadiametergreater than said electromagnet coils, a rod secured to said armature, a working implementcarried by said rod and switching means to alternately energize saidelectro magnet coils.

11. In an electromagnetic a paratus for reciprocating machine tools andthe like, a frame, a plurality of electro magnet coils ,100 carried bysaid frame, an armature located adj acent thereto and having agreaterdiam- 1 eter than the electro magnet coils, a rod se-' cured tosaid armature, a working implement carried by said rod, and means to 105alternately energize said electro-magnet coils.

12. In an electro magnetic apparatus-for I. reciprocating machine toolsan the like, a: frame, a plurality of electromagnet coils carried by'said frame, an armature located intermediately of said coils and of agreater Y diameter than the inner diameter of' either coil, a workingimplement carried by said armature, and means to alternately energizediameter than the inner diameter of either coil, a working implementcarried by said armature, and automatic means to alternatelyenergizesaid electro magnet coils the like,:.a 1 QQ l saidl fmm an arattire seats; and. ff a gre t diameter than the inner diameter of'either,

reciprocating 'machinej tools an carriedby coil, a working implementcarried by said armature, and means to continuously efiect altprnateenergization of said electro magnet 001 s.

15. In an electro magnetic apparatus for reciprocating machine tools andthe like, a frame, a plurality of electro magnet coils carried by saidframe, an armature located so as to be alternately actuated by saidcoils, said armature being of a greater diameter than the inner diameterof either coil, and means for automatically and continuously effectingthe alternate energization of said electro magnet coils.

16. In an electro magnetic apparatus for reciprocating machine tools andthe like, a frame, a plurality of electro magnet coils carried by saidframe, an armature located so as to be alternately actuated by saidcoils,

said armature being of a greater diameter 20 HARRY ALHoRNoR.

W itnesses A. G. CONNELL,

H. MATLAOK.

